you should get such messages, but you need to follow them, here an example
SMART error (CurrentPendingSector) detected on host: x
This message was generated by the smartd daemon running on:
host name: x
DNS domain: xxxxx.com
The following warning/error was logged by the smartd daemon:
Device: /dev/sda [SAT], 1 Currently unreadable (pending) sectors
Device info:
CT1000MX500SSD1, S/N:xxxxxxxxxx, WWN:5-00a075-1e626ce91, FW:M3CR043, 1.00 TB
For details see host's SYSLOG.
You can also use the smartctl utility for further investigation.
Another message will be sent in 24 hours if the problem persists.